consists of the standalone program ALBULA VIEWER, a fast and easy-to-use program that allows optimal visualization of PILATUS and EIGER data, and ALBULA API, a Python programming interface for displaying images and performing operations and calculations. The API enables you to easily integrate the viewer functionality into your beamline infrastructure or experimental setup.

a structure-solution program that constitutes a general crystallographic Ab Initio macromolecular phasing method for 2Å data, based on the combination of location of model fragments like small α-helices with PHASER and density modification with SHELXE.

aims to integrate into one system all the components necessary for finding a solution structure by MR. It consists of a database, scientific programs and a python pipeline. The system is automated and needs no user intervention when running a complicated combination of jobs, such as model searching, molecular replacement and refinement.

(Crystallographic Object-Oriented Toolkit) supports model building and real space refinement. This application interfaces with refmac, Phenix, and several other applications. Coot was recognized as the best structural biology application in 2008 by SBGrid.

a suite of programs for processing diffraction data acquired "serially" in a "snapshot" manner, such as when using the technique of Serial Femtosecond Crystallography (SFX) with a free-electron laser source.

(Diffraction Integration for Advanced Light Sources) a software project for the analysis of crystallographic diffraction images for many new methods from shutterless, fine-sliced rotation scans to randomly-oriented snapshots of serial crystallography. It uses multiple CPU and GPU machines to increase speed and accuracy based on a comprehensive physical model.

(Data Processing Suite) a suite of programs for processing single crystal X-ray diffraction data of proteins, viruses, nucleic acids and other large biological complexes, with an emphasis on data collected at synchrotron sources.

a software suite and toolkit that processes single crystal X-ray diffraction images from two-dimensional position sensitive detectors. This entry is for the free version of d*TREK, contains neither the Reqab absorption correction nor the absorption correction written by Higashi. It also does not make any use of collision file information during the strategy generation.

automates most of the repetitive and mindless procedures used in solving macromolecular crystal structures, and is capable of autonomously carrying out all the steps needed to convert raw X-ray diffraction image data to a phased electron density map.

a program that finds crystallographic molecular replacement solutions using an evolutionary search algorithm. The program directly optimizes three rotational and three positional parameters for the search model with respect to the correlation coefficient between Fo and Fc.

a data processing suite for X-ray crystallography that provides a sleek interface for devising a data collection strategy and processing data. HKL is based on the extended versions of Denzo, Xdisplayf and Scalepack. HKL was developed and is maintained by Wladek Minor (University of Virginia).

(Local-correlation-coefficient-based Automatic FItting for REfinement) an automatic refinement system for protein crystallography. The system starts with an initial model (approximate or partial model) and finishes with the final structure including water molecules. LAFIRE uses the refinement programs CNS or Refmac5.

an expert system for running molecular replacement and refinement applications, and analyzing the data obtained from high-throughput co-crystallography and fragment screening projects. MIExpert is a module of MIFit.

an interactive graphics application for molecular modeling, fitting, and refinement of protein structures from X-ray crystallography developed by Bradley Smith as an Open Source project while working for Rigaku/MSC Inc. A particular focus of the MIFit software is the efficient solution and analysis of protein:ligand complexes.

identifies and assigns carbohydrate structures using only atom types and their 3D atom coordinates given in PDB-files. Looking up a translation table where systematic names and the respective PDB residue codes are listed, both assignments are compared and inconsistencies are reported.

refines any structural model you are working on, by optimising REFMAC refinement and by partial model rebuilding. The process is fully automated so you only need to provide an initial structure model and your reflection data.

a linear-scaling, semiempirical quantum mechanics (SE-QM) program DivCon with the Phenix X-ray refinement engine. Phenix/DivCon does not utilize CIF(s), link restraints and other refinement parameters so there are fewer assumptions about the model. Accurate energy and density scoring tools also allow tautomer/protomer and “flip state” determination.

a program for adding hydrogens to a Protein DataBank (PDB) molecular structure file. Hydrogens are added in standardized geometry with optimization of the orientations of OH, SH, NH3+, Met methyls, Asn and Gln sidechain amides, and His rings. Both proteins and nucleic acids can be processed. HET groups can also be processed as long as the atom connectivity is provided.

carries out rigid body, tls, restrained or unrestrained refinement against Xray data, or idealisation of a macromolecular structure. It minimises the coordinate parameters to satisfy either a Maximum Likelihood or Least Squares residual. REFMAC also produces an MTZ output file containing weighted coefficients for SigmaA weighted mFo-DFcalc and 2mFo-DFcalc maps, where missing data have been restored.

converts PDB files between PDBv2.3 and PDBv3.2 formats. It can accurately and rapidly convert in either direction: old to new OR new to old. Atom records of type ATOM, HETATM, TER, ANISOU, SIGATM, SIGUIJ, and LINK are converted, as are DNA residue names (e.g., A, C, T, G of v2.3 cf. DA, DC, DT, DG of v3.2).

a suite of programs for molecular replacement calculations. It currently consists of two major programs, GLRF for rotation function calculations and TF for translation function calculations. In addition, a small program (ANGCAL) is a convenient tool for conversions between angles and matrices.

supports real-space simulated annealing refinement with X-ray data using an electron density function that is resolution-dependent, so that it accurately models a medium resolution map. When combined with TNTâ€™s Geometry or CNS, full stereochemical refinement is possible. It can quickly pre-refine a protein structure during or after model building, or to completely refine structures with high non-crystallographic symmetry, that have good electron density.

an automated structure solution pipeline built around the heavy-atom refinement and phasing program SHARP, the substructure determination program SHELXD, the density modification program SOLOMON and the model building programs BUCCANEER and ARP/wARP. It allows fully automated structure solution by experimental phasing, from merged reflection data to an initial model, without any user intervention.

Restriction: available to nonprofit users who register with Global Phasing and copy license file to /programs/local/autosharp/autosharp_license.

a set of programs for macromolecular phasing. SHELXC provides a simple and fast way to set up the files for the programs SHELXD (heavy atom location) and SHELXE (phasing and density modification) for macromolecular phasing by the MAD, SAD, SIR and SIRAS methods. hkl2map provides a simple user interface to SHELX and is installed separately.

Restriction: available to nonprofit users who register for SHELX & submit confirmation to SBGrid.

a set of programs for macromolecular phasing. SHELXC is designed to provide a simple and fast way of setting up the files for the programs SHELXD (heavy atom location) and SHELXE (phasing and density modification) for macromolecular phasing by the MAD, SAD, SIR and SIRAS methods. hkl2map provides a simple user interface to SHELX and is installed separately.

Restriction: this version of SHELX is obsolete and has been replaced by SHELX-2013.

based on Shake-and-Bake (a dual-space direct-methods procedure), a computer program for the determination of the anomalously scattering substructures of selenomethionyl-substituted proteins containing as many as 160 Se sites.

a program designed to separate overlapping diffraction patterns from a set of crystals with slightly different orientations. The program can read x files from the HKL Package and CCP4 MTZ files. It can output data files from which the offending reflections have been removed. A case study for a dataset from an aggregate with three dominant subcrystals can be found here.

a graphical user interface for processing diffraction data sets using XDS. It automates the data processing and generates graphical plots of various data set statistics provided by XDS and presenting new features of the dataset, such as radiation decay or the presence of pseudo-translational symmetry and/or twinning, using additional software. Generates intensity files suitable for CCP4, SHELX, and CNS.

Restriction: available to nonprofit users who register with HZB & submit confirmation to SBGrid.

a GUI (graphical user interface) for XDS designed to help both novice and experienced users; it enables XDS data processing without the command line and supplies additional graphical information in a simple, user-modifiable and user-extensible way. It graphically displays the ASCII and cbf files that XDS writes and can run useful shell commands with a simple mouse click.

allows processing of datasets in a given directory with minimum effort when you supply it with a result directory and the directory where your frames are stored. All datasets consisting of more than 100 frames within the given directory and all its subdirectories will be processed. For each dataset a space group assignment is done using POINTLESS from the CCP4 software package. Plots of ...

a collection of python scripts made to simplify the processing of crystal diffraction images with the XDS Program Package. Provided that the diffraction parameters are well recorded in the diffraction image headers, XDS data processing can be started with a simple command lines (see manual for details).

uses interactive computer graphics to introduce basic concepts of X-ray diffraction by crystals, including the reciprocal lattice, the Ewald sphere construction, Laue cones, the wavelength dependence of the reciprocal lattice, primitive and centered lattices and systematic extinctions, rotation photography, Laue photography, space group determination and Laue group symmetry, and the alignment of crystals by examination of reciprocal space.